Wing structure



FIG. 1 is a top perspective view of a wing structure;

FIG. 2 is a bottom perspective view of the wing structure;

FIG. 3 is front elevation view of the wing structure;

FIG. 4 is a rear elevation view of the wing structure;

FIG. 5 is a right side elevation view of the wing structure;

FIG. 6 is a left side elevation view of the wing structure;

FIG. 7 is a top plan view of the wing structure; and,

FIG. 8 is a bottom plan view of the wing structure.

The broken lines are environmental only and form no part of the claimed design. 

CLAIM I claim the ornamental design for a wing structure, as shown and described. 